... :carbon steel or stainless steel2.Bearing bar:from 20x3mm to 100x10mm/ I section from 25x5x3mm to 75x7x4mm3.Bearing bar pitch:12.5mm,30mm,34 ... .3mm,40mm,60mm or according to your requirement Cross bar pitch ... : NoItemDescription1Bearing bar25x3,25x4,30x3,30x4,30x5,32x5,40x5,50x5,.....75x10mm2Bear bar pitch12.5, 15, 20, 23.85, 25, 30, 30. ...